1315243043 has 2 divisors, whose sum is σ = 1315243044. Its totient is φ = 1315243042.

The previous prime is 1315243019. The next prime is 1315243087. The reversal of 1315243043 is 3403425131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315243043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1315243093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657621521 + 657621522.

It is an arithmetic number, because the mean of its divisors is an integer number (657621522).

Almost surely, 2^1315243043 is an apocalyptic number.

1315243043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315243043 is an equidigital number, since it uses as much as digits as its factorization.

1315243043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1315243043 is about 36266.2796961585. The cubic root of 1315243043 is about 1095.6419976749.

Adding to 1315243043 its reverse (3403425131), we get a palindrome (4718668174).

The spelling of 1315243043 in words is "one billion, three hundred fifteen million, two hundred forty-three thousand, forty-three".